Diestock



WITNESSES A. B. CHESTER.

DIESTOCK.

APPLICATION FILED 1m16.191s

vPatented Aug. 12, 1919.

Illlllllll.

lllllllI-llllll INVENTOH ,ATTORNEY UNITED STATES PATENT GFFICE.

ASHMEAD B. CHESTER, OF JACKSONVILLE, ILLINOIS.

DIEST'OCK.

Application led May 16, 1918.

To all whom t may concern:

Be it known that I, ASHMEAD B. CHESTER, a citizen of the United States, residing at Jacksonville, in the county of Morgan and State of Illinois, have invented certain new and useful Improvements in Diestocks, of which the following is a specification.

This invention relates to tools, and more especially to pipe and rod cutters; and the object of the same is to produce a stock or handle adapted for receiving dies by which threads may be cut onto rods or pipes, or for receiving a cutting tool such as a wheel mounted within a block.

The invention relates particularly to the stock or handle by which the various instrumentalities are carried, and the details of its construction are set forth in the following speciication and claim, and shown in the drawings, wherein:

Figure 1 is a plan view,

Fig. 2 a longitudinal section on the line 2-2 of Fig. 1, and

Fig. 3 a cross section on the line 3-3.

Fig. 4 is a detail of the hinge.

The stock as a whole is made up of a long body having 'two handlesI or hand pieces 1 and 2 attached to the extremities of said body by any suitable means. Usually these handles are screwed into the body of a tool of this character, and when unscrewed the parts can be stored in small compass. The body itself is made in two complementary U-shaped elements 3 and t with their open ends adjacent each other, hingedly connected at the point 5 about mid-way the length of the body and at one side of the central opening 6. Directly opposite the hinge one element carries ears 7 and the other has a single ear projecting between these ears, and a pin or bolt 8 extends through alined openings in all ears to hold the parts detachably connected. Both elements have rather narrow ns 9 standing in a single plane, and other hns 10 at the ends of the opening 6 standing in a plane at right angles to the ns 9 so as to give great strength to the structure. Along each side of the opening is a transverse web 11 which, with the adjacent n makes each side of the element have the construction of a letter T. Along each edge of the web is a Bange 12, the two flanges at one side of the opening proj ecting toward and standing opposite the two flanges at the other side. These flanges extend along the full length of both webs 11,

Specification of Letters Patent.

Patented A1103 12, 1919.

serial No. 234,932.'

connect with each other directly across one end of the opening, as 'at 13, and are also carried around the other end of the opening as shown at the right of Fig. 1. At this point the webs 11 connect with each other in an angle as indicated at 11i, and the flanges 12 may or may not be present along the inner faces of the angle. The latter is braced by both ns 9 and 10. Vith the exception that the entire body is made in two elements 3 and 1, all parts thus far described are formed of one piece of metal and the handles applied later.

Slidably mounted in the trackways formed by the webs and iianges of one element such as that numbered 4, is herein shown a block 2O in which is pivotally mounted a cutter wheel 21, its cutting edge standing adjacent the angle 14: at the right lend ofthe opening 6. Slidably mounted in the same trackways are dies, herein numbered 22 and 23 and shown as having complementary notches by means of which a thread may be cut onto a pipe or rod. There may be and doubtless will be other dies employed, and they may be selectively inserted when the bolt is removed and the two elements 3 and 4 turned on their hinge 5. The dies 22 and 23 and others like them may be employed to hold the block 20 near the angular end 13 of the recess 6, so that the cutter 21 will coact with said end Iwhen the tool is in use. v

Mounted in the other element 3 is the ad* justing mechanism. This element may have its body Acast to form an elongated nut 30 into whose threaded bore engages a screw ,31 whose head 32 stands toward the center of the opening` and may have liat faces or sockets for the insertion of a pin or Spanner wrench by means of which the screw may be turned. This head as seen in the drawings, is preferably round on its exterior and of a size to rotate between the webs and flanges but a little too large to be slipped therefrom, except when the screw is withdrawn longitudinally as will be clear. In Figs. 1 and 2 I have shown other nuts 34C and 35 mounted on the threads of the screw, the nut 34: being square and the nut 35 round as shown in Fig. 1. The square nut is of such size that it may be inserted between the flanges 12 at the point where they are cut away, but may not then rotate between such flanges. The other nut 35 is of such size that it may be turned between the flanges and webs, and therefore it constitutes a jam nut to be run down onto the square nut after the parts are set. W'hen these additional nuts are employed their -obvious purpose is to cause the screw to operate near the center of the device for holding the dies and other blocks in place, because without the nuts the threaded end of the screw would have to run down into the integral nut 30 for sufficient distance to give the threads a strong engagement. In the same manner, when the cutter element is employed there will have to be a number of dies or other blocks between the head of the screw and the block 20, so as to hold the latter toward the angular end of the opening 6, because otherwise the screw would have to be lono' enough to perform that function without the interposition of any other member. l

The use of this stock is thought to be obvious from the above description. Tit-h the parts assembled as seen in Fig. l, and perhaps with other blocks filling out the space left blank in this view and in Fig. 2, when a pipe or rod is to be cut it is inserted through the opening 6 adjacent the angle 14, and the screw set to push the block 2O and cutter 2l toward the rod or pipe. Then the entire device is revolved around this piece by hand, and step by step the cutter is advanced as usual. If the work is to be threaded it is passed between the threaded faces of the dies 22 and 28, and the threads cut in a manner which will be clear. If other dies are needed the pin or bolt 8 is removed, the device opened on its hinge 5, and the dies herein shown replaced by others which will go with the outfit and which will have a different thread.

The foregoing description and the drawings have reference to what may be considered the preferred, or approved form of my invention. It is to be understood that I ma;v make such changes in construction and arrangement and combination of parts, materials, dimensions, et cetera, as may prove expedient and fall within the scope of the appended claim.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is

ln a die stock, the combination with a loop-shaped body having handles at its extremities, its opening being bounded by transverse webs having flanges along their edges except at one end where the flanges are omitted, the webs extending across one end of the opening and making an angle at the other end thereof; of dies slidably mounted in the runway formed by said webs and flanges at that end adjacent the angle, the body having a socket nut formed at the other end of said opening, a screw whose shank is threaded into said nut and whose head is round and of a size to prevent lateral displacement from between the flanges, said head being provided with means whereby it may be turned, and nuts on the screw removably mounted between said flanged webs, one nut being square and non-rotary between the webs, and the other nut being round andA rotary, thus constituting a jam nut as described.

ln testimony whereof l affix my signature in presence of two witnesses.

ASHMEAD B. CHESTER.

Witnesses P. G. STEIN, C. O. BAYHA.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

